Machine press



Jan. 18, 1927. 4, 57

- R. JONGEDYK MACHINE PRESS Filed June 25 1925 2 Sheets-Shed 1 I Airy.

Jan. 18 1927.

1,614,557 R. JONGEDYK MA-CHINE PRESS Filed June 25 1925 2 Sheets-Sheet 2 l? hJ/nveggor 4 9 0/779 l .M

Paten'ted Jan. 18, 1927.

RALPH JONGEDYK, OF CHICAGO, ILLINOIS, ASSIGN PANY, INCORPORATED, OF NEW YORK, N. Y., A

CORPORATIO MACHINE PRESS.

Application filed June 25, 1925. Serial No. 39,423.

This invention relates to machine presses, and more particularly to mechanisms for bringing the machine tools operated by such presses in contact with the work.

It is the principal object of the present invention to enable an operator to control the application of power to a machine press for bringing the work in contact with the machine tool and at the same time permit the detection of the behavior of the machine tool.

According to its preferred embodiment, the invention contemplates the provision of a machine press equipped with a work-table which may be raised manually'due to the movement of the usual lever provided for this purpose. This lever is operatively associated with a clutch mechanism, which is rendered effective upon the movement of the lever a predetermined distance and when the movement of the machine tool is retarded for communicating power from a source of motive power which aids the operator in elevating the vvorletable, and also enables the Operator to quickly detect the characteristics of the work as indicated by the behavior of the tool in contact therewith.

Other details and features of the inven tion will become apparent from the follow- 30 ing detailed description taken with the accompanying drawings, wherein Fig. 1 is a front elevation'of a multiple spindle drill press in which one embodiment of the invention is employed to raise the work-table thereof;

Fig. 2 is a side view of a portion of the same mechanism; and

Fig. 3 is a plan section taken on the line 33 of Fig. 2.

40 Referring now to the accompanying drawings in which like numerals are employed to designate similar members throughout the several views, the numeral refers generally to the main frame of the machine terminating in its lower portion in a base 11 which supports the entire mechanism. A work-table 12 is secured to an apron 13, which is slidable in ears 14 which are a part of the main frame 10, whereby whatever material may be placed upon the work-table 12 may be brought into contact with drills 15 which are mounted and operated in any suitable manner. Further details regarding the drills 15 and the manner in which they are caused to rotate will not be described N OF NEW YGRK.

because the invention does not pertain thereto.

The wmk-table 12 is raised by the actuation of a lever 18, and the lever 18 functions described will be unde eration of shaft 19 is the following mechanism. rotatably ournaled in bearings the manner in which to produce the result .rstood from a consid- 20, which are suitably secured to the main frame 10, and has keyed thereto a plate 21 to which is secured guard 23, a plurality tures 24, the purpose scribed, being plate-guard 23. A pl by bolts 22 a plateof cylindrical aperof which will be deprovided in the plate 21 and urality of holes indicated at are also provided in the lever 18, and the apertures in the plate 21 and plateguard 23 being the lever 18, a-

in line with the holes 25in stud 26 may be inserted as shown particularly in Fig. 3 to cause the lever 18 to be pivoted about plurality of selectable any one of a points. A plunger 30 v is forced against a shoulder 31 of the lever 18 by a coil spring 32, the plunger 30 and the spring 32 being secured in a suitable aperture in the plate 21 by means of a tension regulating nut 33 spring The tension of the 32 is preferably regulated so that a preliminary raising of the lever 18 will not cause a depression of the plunger 30. This being the case and the lever 18 also being pinned to the plate 21, the entire lever assembly functions fulcrum on the shaft as a single lever with a' 19 which is therefore rotated by the raising of the lever 18. A bell-crank arm 35 is keyed at 36 to the shaft 19 and communicates 1s suitably secured at v with a link 37 which 38 to the apron 13 so that a rotation of the shaft 19 will cause, through the two members described, a rais-. ing of the apron 13 thus carrying the table 12 to an upward positi on with it. The table 12 is therefore raised preliminarily without the application of any power, ator of the machine, when he ver 18.

by the operraises the lemovement of the parts described in the ceding paragraph. plied to aid the operat feel the behavior of th pre- Machine power is apor in raising the lever 18, at the same time allowing the operator to e drills 15, by the folan elevation of the table 12.

lowing mechanism. A shaft 40 leading to a source of power (not shown) is journaled in suitable bearings 11 in the main frame 10, and carries integral with it a pinion gear 6L2 which meshes with an internal gear 43 on a drum 4 1-. A brake band 15 having one end secured at l6 to the plate 21 and the other end secured at 17 to the lever 18 surrounds the drum 44, as shown particularly in Figs. 2 and 3. The direction of rotation of the drum 44 indicated by the arrow in Fig. 2 is the same as the direction which is required for the shaft 19 to turn in order to result in \Vhenthe work is encountered by the drills15, the resistance to the free movement of the parts required to preliminarily elevate the table causes a depression of the plunger 30' against the shoulder 31 thus allowing'the lever 18 to pivot around the stud 26 thereby tightening the band 45. This tendsto cause the band l to rotate with the drum 14, and since the other end ofthe band is secured at 46 to the plate 21, the motion of the band 46 is imparted to the plate thus tending to cause a rotation of the plate. This results in a power rotation of the shaft 19, thus aiding in the hand rotation thereof so as to elevate the table with greater force than that exerted by the operator.

One of the principal advantages of the in vention is that the operator can feel at all times the behavior of the drills 15. of great advantage, because when the normal progress of thedrill is interfered with or if the operator feels in his hand that the drill is practically; through the part which is drilled, he can immediately either raise or lower the lever 18 in accordance with the demands of the condition encountered. If the lever 18' is raised the force exerted is increased in proportion tothe pull upward on the lever. When the lever 18 is lowered,

pressure of the work against the drills immediately ceases. This is accomplished by the band 15 preliminarily becoming loose upon the drum, thus elin'iinating the power factor; and further movement allows the plunger to return to its normal position while theenti're lever assembly is rotating with theshaftl tl to permit a lowering of the apron 13, thus carrying the" table 12 to a lower position.

The relationship of the force applied by the hand to the lever 18 ancl the power communicated to the shaft 19 can be changed by varying the position of the stud 26 so as to' changethe fulcrum point of thelever proper. The fulcrum point of the entire lever assembly including the plate 21' isof course always the axis of the shaft- 19 indep'ei'ivl'ent of the'position of the stud 26'.

It is believedthat' the invention is applicable in the embodiment shown and in other forms as well to a largenumber of ma- This is chine presses and similar mechanisms in which a machine tool must be given a movement relative to material upon which it is to perform work, and the invention is therefore not to be limited by the specific structure shown in the accompanying drawings and described above, but is to be limited only by the scope of the appended claims.

I claim:

1. In a machine press, a work-table, means for mounting tools with which to perform work upon material on the work-table, means manually controlled for changing the rela tive position of the work-table and the mounting means, a source of motive power, and means for communicating power from said source of motive power in proportion to the force exerted on the manually controlled means to aid the manually controlled means in changing the relative position of the work-table and the mounting means.

2. In a machine press, a work-table, means for mounting toolswith which to perform work upon material on the work-table", manual means for causing a relatii' e movement between the tools and the work-table, and mechanically operable means rendered effective and controlled by the manual means for causing a further movement between the tools and the work-table.

3. In a machine press, a \\'O1'l(l;tbl,111t\li ually operable means for elevating the worktabl'e, a source of motive power, and means for com m unieating power from said source of motive power to assist the first mentioned means in elevating the work-table in proportion to the manual power exerted on the first mentioned means;

1. In a machine press, a Work-table, a manually operable lever con i'rm-rnicating with the work-table for raising the same, and a friction clutch associated with the lever for transmitting power to the lever to aid the lever in raising the work-table, the power transn'iitted being in, proportion to the manual force applied thereto;

5. In a machine press, a work-table, a lever associated with the work-table for raising the same, a power driven drum, and a brake band around the drum having one end secured to the lever, the movement of the lever in raising the work-table also functioning to tighten theband around the drum, so that rotation of the drum aids in the raising of the lever.

6. In a machine press, a worlbt able', a lever associated with the work-table for raising the same, a power driven drum, a brake band around the drum having one end secured to the lever, -means effective upon the movement of the lever to tighten the band around the drum so that rotation of the drum will aid in the raising of the lever, and means for preventing the tightening of the band until a predetermined resistfor tightening the band around the drum so 10 ance to the free raising of the Work-table is that rotation of the drum Will aid the lever encountered. in the raising of the Work-table, and means 7. In a machine press, a Work-table, a permitting a variation in the proportion of lever associated With the Work-table for the force applied to the lever, Which Will be raising the same, a power driven drum, a effective in tightening the band. 15 brake hand around the drum having one In Witness whereof, I hereunto subscribe end secured to the lever, means operated by my name this 13th day of June, A. D, 1925.

a proportion of the force applied to the lever RALPH J ONGEDYK. 

